DETECTION TEMPERATURE ERROR CORRECTION METHOD AND DETECTION TEMPERATURE ERROR CORRECTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To increase the measuring accuracy of the temperature characteristics of the detection output of a temperature sensor in a package module, and to accurately correct the error.;SOLUTION: In a state of a single drive circuit chip 30, a relationship between the detection output of a second diode 37 for temperature detection incorporated in the drive circuit chip 30 and a temperature is measured and stored. In a state of a package module 10, a temperature indicated by the detection signal of a first diode 22 for temperature detection is measured. At the same time, the detection signal of the second diode 37 for temperature detection is substituted in the above mentioned relationship, and the temperature of the second diode 37 for temperature detection is obtained. The first and second diodes 22 and 37 for temperature detection are determined to be placed in substantially the same temperature environment. Therefore, the correction value of the detection signal of the first diode 22 for temperature detection is calculated by using the temperature obtained from the detection signal of the second diode 37 for temperature detection as a reference.;COPYRIGHT: (C)2014,JPO&INPIT